Filter body for a filtration system

Abstract

The invention relates to a filter body (10) for a filtration device (200) having a lid unit (100), with a filter media layer (12) comprising a folded or foldable filter material (14) through which a fluid (F) to be filtered can flow, and at least one, in particular circumferential, sealing contour (16) which is arranged on the filter media layer (12).

Description

[0001] The invention relates to a filter body for a filtration device comprising a lid unit, with a filter media layer comprising a folded or foldable filter material through which a fluid to be filtered can flow.

[0002] Furthermore, the invention relates to a lid unit for a filtration device, comprising a filter body which includes a filter media layer with a folded or foldable filter material through which a fluid to be filtered can flow, and a lid part to which the filter body can be attached and which, together with the filter body, can be placed on a lid receptacle of the filtration device.

[0003] Furthermore, the invention relates to a filtration device with a lid unit comprising a filter body and a lid receptacle onto which the lid unit can be placed.

[0004] Filter media layers with a pleated filter material have a comparatively large filter area due to the folds and can therefore achieve high filter performance even with limited space requirements.

[0005] In particular, sealing and handling such filter bodies has so far posed a problem.

[0006] The object underlying the invention is therefore to simplify the sealing and / or handling of the filter body of a filtration device comprising a lid unit.

[0007] The problem is solved by a filter body of the type mentioned at the outset, wherein the filter body according to the invention has at least one, in particular circumferential, sealing contour which is arranged on the filter media layer.

[0008] The sealing contour is preferably bonded to the filter media layer. Because the sealing contour is formed as an integral part of the filter body, sealing and handling the filter body are significantly simplified.

[0009] In a preferred embodiment of the filter body according to the invention, the filter media layer has at least one flow-through opening for the fluid that is free of filter material. The fluid can pass through the filter media layer via this flow-through opening without being filtered. When the filter body is arranged on a side of a cover part of a filtration device facing a cover receptacle, the fluid to be filtered can thus initially flow into the cover part through the flow-through opening, so that filtration only occurs when the fluid flows back from the cover part into the cover receptacle. The separated particles can therefore be collected within the cover part.

[0010] The filter body can be made of one piece or multiple pieces. The sealing contour can also be attached to the filter media layer in a way that allows for non-destructive removal. The sealing contour can have a constant width and / or height. Alternatively, the sealing contour can have a varying width and / or height. The cross-section of the sealing contour can therefore be constant or vary along its path.

[0011] The filter body according to the invention is further advantageously developed in that the sealing contour extends at least partially along an outer edge of the filter media layer. Alternatively or additionally, the sealing contour can also extend partially spaced from the outer edge of the filter media layer. For example, the contour of the sealing contour has a recessed area in which the sealing contour extends partially spaced from the outer edge of the filter media layer. The sealing contour preferably has a circumferential and / or closed sealing profile. The filter media layer preferably has a top and a bottom. The sealing contour projects beyond the filter material of the filter media layer, preferably on the top and / or the bottom. The filter body preferably terminates at least partially on its outer surface with the sealing contour.

[0012] In a preferred embodiment, the filter body according to the invention has an opening seal, in particular a circumferential one, which extends at least partially along an inner edge of the filter media layer that defines the flow opening. The opening seal preferably has a circumferential and / or closed sealing profile. The opening seal follows the profile of the inner edge of the filter media layer that defines the flow opening. Preferably, the opening seal and the inner edge of the filter media layer that defines the flow opening have a matching profile. If the inner edge of the filter media layer that defines the flow opening lies within a material plane when the filter material is unfolded, the opening seal also lies within this material plane when the filter material is unfolded.If the inner edge of the filter media layer, which defines the flow opening, has a curved shape when the filter material is folded and / or has different slopes along its length, the opening seal also has this curved shape when the filter material is folded and / or has identical slopes along its length. The filter media layer preferably has a top and a bottom. The opening seal preferably projects beyond the filter material of the filter media layer on the top and / or the bottom. The seal contour and the opening seal can be made of the same material and / or project beyond the filter material on the top and / or bottom by the same height. The flow opening is preferably surrounded by the opening seal. The opening seal can have a constant or varying material thickness.

[0013] Furthermore, a filter body according to the invention with a handling tab is preferred, wherein the handling tab is located beyond a flow-through area of ​​the filter media layer, through which the fluid to be filtered flows during operation of the filtration device. The handling tab can be grasped by a person to detach the filter body from the cover part of the cover unit. The handling tab can be formed by a section of the filter material. The handling tab can also be fixed to the filter media layer and / or the sealing contour, for example, by injection molding.

[0014] In an advantageous embodiment, the filter body according to the invention has fixing elements arranged on the sealing contour for fixing the filter body to the lid part of the lid assembly. The fixing elements extend from the sealing contour outwards and / or inwards and / or upwards and / or downwards. The fixing elements can be designed as fixing knobs. The fixing elements can have an oval cross-section. The fixing elements can be inserted into fixing recesses on the lid part to fix the filter body to the lid part. When the fixing elements are inserted into the fixing recesses, they are preferably deformed, in particular elastically deformed. The fixing recesses preferably have an undercut, so that a positive locking action of the fixing elements is achieved in the fixing recesses. The fixing elements can be arranged at uniform or uneven intervals along the course of the sealing contour.The fixing elements preferably project beyond the sealing contour on a side facing away from the filter media layer. The fixing elements can be material projections that can be fixed in fixing recesses in the lid part by means of a force-fit and / or form-fit connection. The fixing elements can, for example, be pressed into the fixing recesses to secure the filter body to the lid part by means of a force-fit and / or form-fit connection. The fixing elements and the sealing contour can be integral components of a single-piece sealing body.

[0015] In an advantageous embodiment of the filter body according to the invention, the filter material of the filter media layer is held in a folded, and in particular multiply folded, shape by means of a stiffening structure. The resulting folds can be crease-free or crease-edged. A crease-free shape can, for example, be a kink-free corrugated form. Because the filter material is held in the folded shape, several filter bodies can be stacked on top of each other in a space-saving manner, thereby simplifying handling and reducing logistics costs. The stiffening structure can be arranged on the outside of the filter material. The stiffening structure can be integrated into the filter material. The stiffening structure can be a stiffening frame. The stiffening structure can be made of plastic. The stiffening structure can be formed by the sealing contour.

[0016] In a further preferred embodiment of the filter body according to the invention, the filter media layer comprises several layer segments, with a retaining element arranged between each layer segment. This retaining element can be attached to a mounting contour in the lid part of the lid unit by force-fit and / or form-fit. Along the retaining elements between the layer segments, the filter body exhibits increased stiffness, which permits force-fit and / or form-fit attachment to a mounting contour in the lid part. The retaining elements can be formed by melted areas in which the filter medium is partially melted by heat treatment. Alternatively, the retaining elements can also be injection-molded material areas. The retaining elements can be continuous or interrupted, for example, slotted. For example, several retaining elements may run parallel to each other.One or more retaining elements can also run parallel to the pleat alignment or orientation. The retaining elements can be located only on the top or only on the bottom of the filter body, thus defining a specific mounting orientation. Alternatively, retaining elements can be arranged on both the top and bottom of the filter body. If the retaining elements are designed as strips of material, the width of the strips can be constant. Alternatively, the width of the strips can vary along their length. For example, the strips might become wider from the outside in or narrower from the outside in. The retaining elements can be used to hold the filter body to the lid of the cover unit.The retaining elements are preferably arranged and designed such that, in the folded state of the filter media layer, they form the crests or fold transition areas of the respective folds. The retaining elements are preferably stiffening strips running parallel to one another. The retaining elements can be fixed to the filter material of the filter media layer. For example, the retaining elements are glued or welded to the filter material of the filter media layer. The retaining elements can, for example, be clamped into the mounting contours in the lid section. If the filter material has a crown fold, the retaining elements can be arranged in the area of ​​the crown tips.

[0017] In a further preferred embodiment of the filter body according to the invention, the sealing contour extends within a pleat fold plane defined by the folding of the filter material, in which several or all of the pleat folds located on one side of the filter body lie. Preferably, the filter body has an upper pleat fold plane and a lower pleat fold plane, wherein several or all of the pleat folds located on the top side of the filter body lie in the upper pleat fold plane and several or all of the pleat folds located on the bottom side of the filter body lie in the lower pleat fold plane.

[0018] Furthermore, a filter body according to the invention is preferred in which the lateral folded edges of the filter material are designed without sealing. The lateral folded edges are preferably neither glued to any lateral wall sections nor provided with a side lamination. The filter body can thus be folded up in an extremely space-saving manner for transport purposes.

[0019] In another preferred embodiment of the filter body according to the invention, the sealing contour is formed by a sealing frame, in particular a circumferential one, wherein the lateral outer edges of the pleats of the filter material are fixed to or in the sealing frame. The lateral outer edges of the pleats of the filter material can be cast into the sealing frame. The pleat of the filter material is preferably designed without fold edges.

[0020] In another preferred embodiment, the filter body according to the invention has a support frame comprising several pleat support elements, each extending inside a pleat of the filter material and each supporting a pleat of the filter material. The support frame can, for example, be a strut frame. The pleat support elements can, for example, be pleat support struts. The support frame can also provide a sealing function and thus act as both a sealing and support frame.

[0021] The problem underlying the invention is further solved by a lid unit of the type mentioned above, wherein the filter body of the lid unit according to the invention is designed according to one of the embodiments described above. With regard to the advantages and modifications of the lid unit according to the invention, reference is therefore first made to the advantages and modifications of the filter body according to the invention.

[0022] For example, the filter body has no creases in its delivered state, or is manufactured without creases in its delivered state. Creases may only form, for example, when the filter body is attached to the lid part and / or when the lid unit is placed onto the lid holder.

[0023] In a preferred embodiment of the lid unit according to the invention, the lid part has a pleat contouring arrangement for contouring the pleats of the filter body attached to the lid part. The pleat contouring arrangement can, for example, comprise one or more pleat contouring combs. By placing the filter body onto the pleat contouring arrangement, a pleat contour defined by the pleat contouring arrangement can be imprinted onto the filter body.

[0024] In another preferred embodiment of the lid unit according to the invention, the pleat contouring arrangement has several pleat contouring ribs, wherein one or more pleat contouring ribs are each assigned to a pleat of the filter body attached to the lid part and are configured to contour the assigned pleat. The pleat contouring ribs can be designed as comb teeth of a pleat contouring comb. The pleat contouring arrangement can comprise one or more pleat contouring combs, wherein the respective pleat contouring combs can comprise one or more comb teeth.

[0025] The lid assembly according to the invention is further advantageously developed in that the lid part has one or more fixing recesses in which fixing elements of the filter body can be fixed to the lid part by means of force-fit and / or form-fit. The fixing elements can be arranged on the sealing contour of the filter body. The fixing recesses preferably form an undercut so that the fixing elements can be inserted into the fixing recesses under elastic deformation. The undercut ensures a form-fit attachment of the filter body to the lid part.

[0026] In another preferred embodiment of the lid unit according to the invention, the lid part has fastening contours to which retaining elements arranged between layer segments of the filter media layer can be attached to the lid part by means of force-fit and / or form-fit. The fastening contours can be formed by recesses or slots into which the retaining elements of the filter body can be pressed.

[0027] The lid unit according to the invention is further advantageously developed in that the lid part has a frame receiving area into which a sealing frame or a support frame of the filter body can be inserted for force-fit and / or form-fit fastening of the filter body to the lid part. The frame receiving area can be a clamping recess into which the sealing frame or the support frame of the filter body can be clamped. The frame receiving area can have an undercut by means of which the inserted sealing frame or support frame can be held in a form-fit manner in the frame receiving area.

[0028] The problem underlying the invention is further solved by a filtration device of the type mentioned above, wherein the filter body is designed according to one of the embodiments described above and / or wherein the lid unit is designed according to one of the embodiments described above. With regard to the advantages and modifications of the filtration device according to the invention, reference is therefore first made to the advantages and modifications of the filter body according to the invention and the advantages and modifications of the lid unit according to the invention.

[0029] In a preferred embodiment of the filtration device according to the invention, the lid receptacle has a counter-contouring arrangement for contouring the pleats of the filter body attached to the lid. The counter-contouring arrangement can comprise one or more pleat contouring combs. When the lid unit is placed onto the lid receptacle, the pleat contouring arrangement of the lid part and the counter-contouring arrangement of the lid receptacle preferably interlock in such a way that the filter body running between the pleat contouring arrangement and the counter-contouring arrangement is forced into a pleated shape.

[0030] In a preferred embodiment of the filtration device, the counter-contouring arrangement has several counter-contouring ribs, wherein one or more counter-contouring ribs are assigned to a fold of the filter body attached to the cover part and are configured to contour the assigned fold. The counter-contouring ribs can be designed as comb teeth. The fold contouring combs of the counter-contouring arrangement can comprise one or more comb teeth.

[0031] In a further preferred embodiment of the filtration device according to the invention, the lid unit and the lid receptacle have corresponding rotary locking elements by means of which the lid unit and the lid receptacle can be fixed to one another. The rotary locking elements of the lid unit and the lid receptacle can, for example, be threaded sections by means of which the lid unit can be screwed onto the lid receptacle.

[0032] Preferred embodiments of the invention are explained and described in more detail below with reference to the accompanying drawings. These show: Fig. 1 a filtration device according to the invention in a perspective view; Fig. 2 those in the Fig. 1. Filtration unit shown in an exploded view; Fig. 3 the in the Fig. 2 filtration devices shown in a sectional view; Fig. 4 a filter body according to the invention in a perspective view; Fig. 5 another filter body according to the invention in a perspective view; Fig. 6 a sealing contour of a filter body according to the invention extending between a lid part and a lid receptacle in a sectional view; Fig. 7 who are in the Fig. 6. Sealing contour shown after removal of a lid unit comprising the filter body and the lid part from the lid mount in a perspective view; Fig. 8 who are in the Fig. 6. Sealing contour shown after placing the lid unit comprising the filter body and the lid part onto the lid receptacle in a perspective view; Fig. 9 a further filter body according to the invention in a perspective view; Fig. 10 multiple filter bodies stacked on top of each other according to the one in the Fig. 9 illustrated embodiment in a sectional view; Fig. 11 a lid part of a lid unit according to the invention in a perspective view; Fig. 12 a further filter body according to the invention in a perspective view; Fig. 13 a further filter body according to the invention in a perspective view; Fig. 14 a filtration device according to the invention in a schematic perspective view; Fig. 15 a further filtration device according to the invention in a perspective exploded view; Fig. 16 who are in the Fig. 15 filtration devices shown in a sectional view; Fig. 17 the lid unit of the in the Fig. 15 filtration unit shown in an exploded view; Fig. 18 the filter body of the in the Fig. 17 illustrated lid units in a perspective view; Fig. 19 an area of ​​the sealing frame of the in the Fig. 18 filter bodies shown in detail; Fig. 20 another filter body according to the invention in a perspective view; Fig. 21 the folding support parts of the in the Fig. 20 filter bodies shown in detail; Fig. 22 the filter media position of the in the Fig. 20 filter bodies shown in a perspective view; and Fig. 23 who are in the Fig. 22. Filter media layer shown in a folded state.

[0033] The Fig. Figure 1 shows a filtration device 200 with a lid unit 100 mounted on a lid receptacle 202. The lid unit 100 comprises a lid part 102 with a handle 104. The handle 104 can be gripped by a user, for example to attach the lid part 102 to the lid receptacle 202 or to detach the lid unit 100 from the lid receptacle 202.

[0034] The lid unit 100 includes a filter body 10, which remains attached to the lid part 102 when the lid part 102 is lifted from the lid receptacle 202.

[0035] The lid part 102 has rotary locking elements 112, by means of which the lid part 102 is secured by the Fig. The locking ring 206 shown in the illustration can be attached to the cover receptacle 202.

[0036] The cover part 102 has a pleat contouring arrangement 106 for contouring the pleats of the filter body 10 attached to the cover part 102. The cover receptacle 202 has a counter-contouring arrangement 204 for contouring the pleats of the filter body 10 attached to the cover part 102. The pleat contouring arrangement 106 of the cover part 102 and the counter-contouring arrangement 204 of the cover receptacle 202 interlock.

[0037] The Fig. Figure 2 shows that the pleat contouring arrangement 106 comprises several pleat contouring combs. Specifically, the pleat contouring arrangement 106 comprises several pleat contouring ribs 114, each of which is assigned to a pleat of the filter body 10 attached to the cover part 102 and is configured to contour the assigned pleat. The pleat contouring ribs 114 are designed as comb teeth.

[0038] The counter-contouring arrangement 204 also has several pleat contouring combs. Specifically, the counter-contouring arrangement 204 has several counter-contouring ribs 218, each of which is assigned to a pleat of the filter body 10 attached to the cover part 102 and is configured to contour the assigned pleat. The counter-contouring ribs 218 are designed as comb teeth.

[0039] The filter body 10 has a filter media layer 12, which comprises a pleated filter material 14 through which a fluid F to be filtered can flow. A circumferential sealing contour 16 is arranged on the filter media layer 12. The sealing contour 16 extends along the outer edge of the filter media layer 12.

[0040] The filter media layer 12 has a filter material-free flow-through opening 18 for the fluid F. A sealing element 20 runs along the edge of the filter media layer 12 that defines the flow-through opening 18. The sealing contour 16 and the sealing element 20 are made of the same material and extend the same height above the filter material 14 on both the top and bottom sides.

[0041] The filter body 10 further comprises a handling tab 22, which is located beyond a flow-through area of ​​the filter media layer 12, through which the fluid F to be filtered flows during operation of the filtration device 200. The handling tab 22 can be grasped by a person to detach the filter body 10 from the cover part 102 of the cover unit 100.

[0042] The filter material 14 of the filter media layer 12 has several edgeless folds. The folds are formed by upper fold folds 24a-24c and lower fold folds 26a, 26b.

[0043] The lid receptacle 202 has a locking ring 206 which has internal rotary locking elements which can be engaged with the rotary locking elements 112 of the lid part 102.

[0044] Furthermore, the lid receptacle 102 has an inlet 208 for the fluid F to be filtered and an outlet 210 for the filtered fluid F.

[0045] The Fig. Figure 3 shows that the fluid F to be filtered initially flows into the lid receptacle 202 of the filtration device 200 via the inlet 208. The raw side of the filtration device 200, i.e., the area where the fluid F is located before flowing through the filter material 14 of the filter body 10, is divided into two raw side sections 212a and 212b. Raw side section 212a comprises the flow areas in the lid receptacle 202, while raw side section 212b comprises the raw side flow areas in the lid part 102. The unfiltered fluid F can pass through the filter media layer 12 of the filter body 10 via the filter material-free flow opening 18 and thus flow unfiltered into the lid part 102. In an upper area of ​​the lid part 102, the fluid to be filtered is then deflected and directed towards the filter material 14 of the filter body 10.After flowing through the filter material 14 of the filter body 10, the fluid F reaches the clean side 214 of the filtration device, the clean side 214 being located in the lid receptacle 202. The filtered fluid F is then discharged via a [missing information - likely a specific component or feature] in the [missing information - likely a specific component or feature]. Fig. 3 outlets not shown, 210, are routed from the lid receptacle 202.

[0046] The particles separated from the fluid F thus collect in the raw side section 212b on the lid mounting side, so that the separated particles remain in the lid part 102 even when the lid unit 100 is removed from the lid mounting 202.

[0047] The Fig. Figure 4 shows a filter body 10 with a filter media layer 12 and a circumferential sealing contour 16, which runs along the outer edge of the filter media layer 12. The filter media layer 12 comprises a foldable filter material 14 through which the fluid F to be filtered can flow. Furthermore, the filter body 10 includes a handling tab 22, which can be grasped by a person to detach the filter body 10 from the cover part 102 of the cover unit 100.

[0048] The handling tab 22 is designed as a material extension which connects to the oval basic shape of the filter media layer 12 in a tab-like manner.

[0049] The opening seal 20 follows the course of the inner edge of the filter media layer 12 that defines the flow opening 18. The opening seal 18 and the inner edge of the filter media layer 12 that defines the flow opening 20 have a matching profile. Due to the unfolded state of the filter material 14, the inner edge of the filter media layer 12 that defines the flow opening 18 lies within the same material plane as the opening seal 20.

[0050] The Fig. Figure 5 shows a handling tab 22, which is formed by an indentation in the sealing path of the sealing contour 16.

[0051] The Fig. Figure 6 shows a sealing contour 16 extending between a cover part 102 and a cover receptacle 202. The cover part 102 has a circumferential fixing recess 108 within which an upper portion of the sealing contour 16 is arranged. The cover receptacle 202 has a circumferential sealing recess in which a lower portion of the sealing contour 16 is arranged.

[0052] The upper part of the sealing contour 16 is clamped in the circumferential fixing recess 108 of the cover part 102 and is in circumferential contact with the sealing surface 110. Due to the clamping of the sealing contour 16 in the fixing recess 108, the filter body 10 remains attached to the cover part 102 when the cover part 102 is lifted from the cover receptacle 202. The sealing contour 16 is not clamped within the sealing receptacle of the cover receptacle 202. However, to achieve a seal, the sealing contour 16 makes circumferential contact with the sealing surface 216.

[0053] The Fig. Figure 7 shows that the filter body 10 remains attached to the lid part 102 when the lid part 102 is lifted from the lid receptacle 202 due to the clamping effect exerted by the fixing recess 108 on the upper part of the sealing contour 16.

[0054] The Fig. Figure 8 shows that a lower part of the sealing contour 16 comes back into contact with the sealing surface 216 when the cover unit 100 is placed on top.

[0055] The Fig. Figure 9 shows a filter body 10 with a filter media layer 12, which comprises a pleated filter material 14 through which a fluid F to be filtered can flow. The filter material 14 of the filter media layer 12 is held in a multiply pleated shape by means of a stiffening structure 28. The stiffening structure 28 is formed by the sealing contour 16. The sealing contour 16 imprints the pleats 24a-24c and the pleats 26a, 26b onto the filter media layer 12.

[0056] The opening seal 20 follows the contour of the inner edge of the filter media layer 12 that defines the flow opening 18. The opening seal 18 and the inner edge of the filter media layer 12 that defines the flow opening 20 have a matching contour pattern. Due to the folded state of the filter material 14, the inner edge of the filter media layer 12 that defines the flow opening 18 has a curved shape and exhibits varying slopes along its contour. The opening seal 20 has the same curved shape and the same slopes along its contour.

[0057] The Fig. Figure 10 shows several stacked filter bodies 10. Due to the dimensional stability provided by the sealing contour 16, which acts as a stiffening structure 28, the filter bodies 10 can be stacked on top of each other to save space.

[0058] The Fig. Figure 11 shows a lid part 102 of a lid unit 100. The lid part 102 includes a handle 104 for gripping by an operator. On the outside are rotary locking elements 112 for attaching the lid part 102 to a lid receptacle 202.

[0059] The cover part 102 has a pleat contouring arrangement 106 for contouring the pleats of the filter body 10 to be attached to the cover part 102. The pleat contouring arrangement 106 comprises several pleat contouring ribs 114, with several pleat contouring ribs 114 being assigned to each pleat of the filter body 10 to be attached to the cover part 102. The pleat contouring ribs 114 assigned to a pleat serve to contour the pleat assigned to the respective pleat contouring ribs 114.

[0060] The Fig. Figure 12 shows a filter body 10 in which the filter media layer 12 has several layer segments 30a-30d. A retaining element 32a-32e is arranged between each of the layer segments 30a-30d. The retaining elements 32a-32e can be attached to a mounting contour in the cover part 102 of the cover unit 100 in a force-fit and form-fit manner. The retaining elements 32a-32e are arranged and designed such that, in the folded state of the filter media layer 12, they form the fold tips or the fold-over areas of the respective folds. The retaining elements 32a-32e are stiffening strips running parallel to each other. The retaining elements 32a-32e are fixed to the filter material 14 of the filter media layer 12. The retaining elements 32a-32e can be clamped into the mounting contours in the cover part 102.

[0061] The Fig. Figure 13 shows a filter body 10 in which fixing elements 34a-34f are arranged on the sealing contour 16 for fixing the filter body 10 to the cover part 102 of the cover unit 100. The fixing elements 34a-34f project beyond the sealing contour 16 on the side facing away from the filter media layer 12. The fixing elements 34a-34f and the sealing contour 16 are integral components of a one-piece sealing body. The fixing elements 34a-34f are material projections that can be fixed in fixing recesses in the cover part 102 by means of force-fit and / or form-fit. In this case, the fixing elements 34a-34f are designed as retaining studs.

[0062] The Fig. Figure 14 shows a filtration device 200 in which the lid part 102 has fixing recesses 108a-108c in which fixing elements 34a-34f of the filter body 10 can be fixed to the lid part 102 in a force-fit and form-fit manner. The fixing recesses form undercuts so that the fixing elements 34a-34f can be elastically deformed to be inserted into the fixing recesses 108a-108c.

[0063] The Fig. Figure 15 shows another filtration device 200 with a lid holder 202 and a lid unit 100 that can be placed on the lid holder 202.

[0064] The lid unit 100 comprises a lid part 102 and a filter body 10 attached to the lid part 102. The lid part 102 comprises a pleat contouring arrangement 106 with a plurality of pleat contouring ribs 114 for contouring the pleats of the filter body 10 attached to the lid part 102.

[0065] The lid receptacle 102 comprises a counter-contouring arrangement 204 with a plurality of counter-contouring ribs 218 for contouring the folds of the filter body 10 attached to the lid part 102. The fold contouring ribs 114 of the fold contouring arrangement 106 and the counter-contouring ribs 218 of the counter-contouring arrangement 204 interlock when the lid unit 100 is placed on the lid receptacle 102 in such a way that the filter media layer 12 of the filter body 10 is folded multiple times without edges between the fold contouring ribs 114 and the counter-contouring ribs 218.

[0066] In the Fig. Figure 16 shows that the filter media layer 12 has filter material-free flow openings 18 for the fluid F, so that the fluid F can initially flow unfiltered into the lid part 102 and, as it flows from the lid part 102 back into the lid receptacle 202, passes through the filter material 14 of the filter body 10. The particles separated from the fluid F thus remain in the lid part 102 and can be detached from the lid receptacle 202 together with the lid unit 100.

[0067] The Fig. Figure 17 shows that the filter body 10 can be detached from the cover part 102 and has a circumferential sealing frame 36. In this embodiment, the sealing contour 16 is formed by the sealing frame 36.

[0068] The Fig. 18 and Fig. Figure 19 shows that the lateral outer edges of the pleats 24a-24j of the filter material 14 are fixed in the sealing frame 36.

[0069] The Fig. 20 and Fig. Figure 21 shows a filter body 10 with a support frame 38. The support frame 38 comprises several pleat carrier parts 40a-40j, each extending inside a pleat 24a-24j of the filter material 14, and each of which supports a pleat 24a-24j of the filter material 14. The support frame 38 is a strut frame, with the pleat carrier parts 40a-40j designed as pleat carrier struts. The support frame 38 also includes the sealing contour 16 and thus also implements the sealing function.

[0070] The cover part 102 has frame mounting areas 116a, 116b into which the pleated support parts 40a-40j of the support frame 38 can be inserted for force-fit and form-fit attachment of the filter body 10 to the cover part 102. The frame mounting areas 116a, 116b are clamping receptacles into which the pleated support parts 40a-40j can be clamped.

[0071] The Fig. 22 and Fig. Figures 23 show a filter media layer 12 of a filter body 10, which is in an unfolded state (cf. Fig. 22) into a folded state (cf. Fig. 23) is transferable. Reference sign 10 filter bodies 12 filter media layers 14 filter material 16 Sealing contour 18 Flow opening 20 Opening seal 22 Handling tab 24a-24j Folded envelopes 26a-26b Folded envelopes 28 Stiffening structure 30a-30d layer segments 32a-32e retaining links 34a-34f Fixing elements 36 sealing frames 38 support frames 40a-40j Folding carrier parts 100 lid units 102 Lid part 104 Handle 106 Fold contouring arrangement 108, 108a-108c Fixing recesses 110 sealing surface 112 rotary locking elements 114 fold contouring ribs 116a, 116b Frame recording areas 200 filtration unit 202 Cover mounting 204 Counter-contouring arrangement 206 Locking ring 208 Admission 210 Outlet 212a, 212b Raw page sections 214 Pure page 216 sealing surface 218 counter-contouring ribs F Fluid

Claims

[1] Filter body (10) for a filtration device (200) having a cover unit (100), with a filter media layer (12) which comprises a folded or foldable filter material (14) through which a fluid (F) to be filtered can flow; characterized by at least one, in particular circumferential, sealing contour (16) which is arranged on the filter media layer (12). [2] Filter body (10) according to claim 1, characterized by that the filter media layer (12) has at least one filter material-free flow opening (18) for the fluid (F). [3] Filter body (10) according to claim 1 or 2, characterized by that the sealing contour (16) runs at least in sections along an outer edge of the filter media layer (12). [4] Filter body (10) according to one of the preceding claims, characterized byan opening seal (20), in particular a circumferential one, which runs at least in sections along an inner edge of the filter media layer (12) delimiting the flow opening (18). [5] Filter body (10) according to one of the preceding claims, characterized by a handling tab (22) which is located beyond a flow-through area of ​​the filter media layer (12) through which the fluid (F) to be filtered flows during operation of the filtration device (200). [6] Filter body (10) according to one of the preceding claims, characterized by fixing members (34a-34f) arranged on the sealing contour (16) for fixing the filter body (10) to the cover part (102) of the cover unit (100). [7] Filter body (10) according to one of the preceding claims, characterized by that the filter material (14) of the filter media layer (12) is held in a folded, in particular multiply folded, form by means of a stiffening structure (28). [8] Filter body (10) according to one of the preceding claims, characterized by that the filter media layer (12) has a plurality of layer segments (30a-30d), wherein a holding member (32a-32e) is arranged between each of the layer segments (30a-30d), which holding member can be fastened in a force-fitting and / or form-fitting manner to a fastening contour in the cover part (102) of the cover unit (100). [9] Filter body (10) according to one of the preceding claims, characterized by that the sealing contour (16) runs within a fold-over plane predetermined by the folding of the filter material (14), in which several or all folds (24a-24j) located on one side of the filter body (10) lie. [10] Filter body (10) according to one of the preceding claims, characterized by that the lateral fold edges of the filter material (14) are designed without sealing. [11] Filter body (10) according to one of the preceding claims, characterized bythat the sealing contour (16) is formed by a, in particular circumferential, sealing frame (36), wherein the lateral outer edges of the folds (24a-24j) of the filter material (14) are fixed on or in the sealing frame (36). [12] Filter body (10) according to one of the preceding claims, characterized by a support frame (38) which comprises a plurality of pleat support parts (40a-40j), each of which extends inside a pleat turn-up (24a-24j) of the filter material (14) and on each of which a pleat turn-up (24a-24j) of the filter material (14) rests. [13] Cover unit (100) for a filtration device (200), with - a filter body (10) comprising a filter media layer (12) with a folded or foldable filter material (14) through which a fluid (F) to be filtered can flow; and - a cover part (102) to or in which the filter body (10) can be fastened and which, together with the filter body (10), can be placed on a cover receptacle (202) of the filtration device (200); characterized by that the filter body (10) is designed according to one of the preceding claims. [14] Lid unit (100) according to claim 13, characterized by that the cover part (102) has a pleat contouring arrangement (106) for contouring the pleats of the filter body (10) attached to the cover part (102). [15] Lid unit (100) according to claim 14. characterized by in that the pleat contouring arrangement (106) has a plurality of pleat contouring webs (114), wherein one or more pleat contouring webs (114) are assigned to a pleat of the filter body (10) fastened to the cover part (102) and are designed to contour the assigned pleat. [16] Cover unit (100) according to one of claims 13 to 14, characterized bythat the cover part (102) has one or more fixing recesses (108, 108a-108c) in which fixing members (34a-34f) of the filter body (10) can be fixed in a force-fitting and / or form-fitting manner in order to fix the filter body (10) to the cover part (102). [17] Cover unit (100) according to one of claims 13 to 16, characterized by that the cover part (102) has fastening contours to which holding members (32a-32e) arranged between layer segments (30a-30d) of the filter media layer (12) can be fastened in a force-fitting and / or form-fitting manner for fastening the filter body (10) to the cover part (102). [18] Cover unit (100) according to one of claims 13 to 17, characterized by that the cover part (102) has a frame receiving area (116a, 116b) into which a sealing frame (36) or a support frame (38) of the filter body (10) can be inserted for non-positive and / or positive fastening of the filter body (10) to the cover part (102). [19] Filtration device (200), with - a cover unit (100) comprising a filter body (10); and - a lid holder (202) onto which the lid unit (100) can be placed; characterized by that the filter body (10) is designed according to one of claims 1 to 12 and / or the cover unit (100) is designed according to one of claims 13 to 18 [20] Filtration device (200) according to claim 19, characterized by that the cover receptacle (202) has a counter-contouring arrangement (204) for contouring the folds of the filter body (10) attached to the cover part (102). [21] Filtration device (200) according to claim 20, characterized by in that the counter-contouring arrangement (204) has a plurality of counter-contouring webs (218), wherein one or more counter-contouring webs (218) are assigned to a fold of the filter body (10) fastened to the cover part (102) and are designed to contour the assigned fold. [22] Filtration device (200) according to claim 20 or 21, characterized by that the lid unit (100) and the lid receptacle (202) have corresponding rotary closure elements (112) by means of which the lid unit (100) and the lid receptacle (202) can be fixed to one another.

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